<template>
  <div>
    <TypeNav />
    <div class="main">
      <div class="py-container">
        <!--bread面包屑-->
        <div class="bread">
          <ul class="fl sui-breadcrumb">
            <li>
              <a href="#">全部结果</a>
            </li>
          </ul>
          <ul class="fl sui-tag">
            <!-- 三级列表的面包屑 -->
            <li class="with-x" v-if="searchParams.categoryName">
              {{searchParams.categoryName}}
              <i @click="removeCategoryName">×</i>
            </li>
            <!-- 搜索框关键字的面包屑 -->
            <li class="with-x" v-if="searchParams.keyword">
              {{searchParams.keyword}}
              <i @click="removeKeyword">×</i>
            </li>
            <!-- 品牌面包屑 -->
            <li class="with-x" v-if="searchParams.trademark">
              {{searchParams.trademark.split(':')[1]}}
              <i @click="removeBrand">×</i>
            </li>
            <!-- 售卖属性面包屑 -->
            <li class="with-x" v-for="(propsValue,index) in searchParams.props" :key="index">
              {{propsValue.split(':')[1]}}
              <i @click="removeProp(index)">×</i>
            </li>
          </ul>
        </div>

        <!--selector 品牌/参数筛选-->
        <SearchSelector />

        <!--details 详情/排序-->
        <div class="details clearfix">
          <div class="sui-navbar">
            <div class="navbar-inner filter">
              <ul class="sui-nav">
                <li :class="{active:includeOne}">
                  <a href="javascript:;" @click="changeOrder('1')">
                    综合
                    <svg class="icon" aria-hidden="true" v-show="includeOne">
                      <use :xlink:href="upOrDown" />
                    </svg>
                  </a>
                </li>
                <li :class="{active:includeTwo}">
                  <a href="javascript:;" @click="changeOrder('2')">
                    价格
                    <svg class="icon" aria-hidden="true" v-show="includeTwo">
                      <use :xlink:href="upOrDown" />
                    </svg>
                  </a>
                </li>
              </ul>
            </div>
          </div>

          <!-- 商品图 -->
          <div class="goods-list">
            <ul class="yui3-g">
              <li class="yui3-u-1-5" v-for="(good,index) in goodsList" :key="good.id">
                <div class="list-wrap">
                  <div class="p-img">
                    <!-- 路由跳转，并且携带params参数 -->
                    <router-link :to="`/detail/${good.id}`">
                      <img v-lazy="good.defaultImg" :key="good.defaultImg" />
                    </router-link>
                  </div>
                  <div class="price">
                    <strong>
                      <em>¥</em>
                      <i>{{good.price}}</i>
                    </strong>
                  </div>
                  <div class="attr">
                    <router-link
                      :to="`/detail/${good.id}`"
                      title="促销信息，下单即赠送三个月CIBN视频会员卡！【小米电视新品4A 58 火爆预约中】"
                    >{{good.title}}</router-link>
                  </div>
                  <div class="commit">
                    <i class="command">
                      已有
                      <span>2000</span>人评价
                    </i>
                  </div>
                  <div class="operate">
                    <a href="success-cart.html" target="_blank" class="sui-btn btn-bordered btn-danger">加入购物车</a>
                    <a href="javascript:void(0);" class="sui-btn btn-bordered">收藏</a>
                  </div>
                </div>
              </li>
            </ul>
          </div>

          <!-- 分页器 -->
          <Pagination :pageNo="searchParams.pageNo" :pageSize="searchParams.pageSize" :total="total" :continues="5" />
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import SearchSelector from './SearchSelector/SearchSelector'
import { mapGetters, mapState } from 'vuex'
export default {
  name: 'Search',
  data () {
    return {
      // 要带给服务器的参数
      searchParams: {
        "category1Id": "",
        "category2Id": "",
        "category3Id": "",
        // 分类名字
        "categoryName": "",
        // 搜索栏传入的关键字
        "keyword": "",
        // 排序规则
        "order": "1:desc",
        // 分页器，代表当前第几页
        "pageNo": 1,
        // 每页展示的数据个数
        "pageSize": 20,
        // searchSelector平台售卖属性
        "props": [],
        "trademark": ""
      }
    }
  },
  components: {
    SearchSelector
  },
  computed: {
    // 仓库的state对象分模块，但是getter不分模块，因此传递的参数是一个数组
    ...mapGetters(['goodsList', 'attrsList', 'trademarkList']),
    // 把仓库中search仓库的total值映射出来
    ...mapState({
      total: state => state.search.searchList.total
    }),
    // 判断order参数是否包含1
    includeOne () {
      return this.searchParams.order.includes('1')
    },
    // 判断order参数是否包含2
    includeTwo () {
      return this.searchParams.order.includes('2')
    },
    includeAsc () {
      return this.searchParams.order.includes('asc')
    },
    includeDesc () {
      return this.searchParams.order.includes('desc')
    },
    upOrDown () {
      if (this.searchParams.order.includes('asc')) {
        return `#icon-shangjiantou`
      } else if (this.searchParams.order.includes('desc')) {
        return `#icon-xiajiantou`
      }
    }
  },
  methods: {
    // 把请求后台数据封装成一个函数，需要时调用即可
    getData () {
      // 向服务器发请求获取search模块数据（根据传入参数的不同返回不同的数据进行展示）
      this.$store.dispatch('getSearchList', this.searchParams)
    },
    // 删除面包屑三级分类的标签
    removeCategoryName () {
      this.removeKeyword()
      // 每次发送请求都要初始化searchParams中的三级列表id数据
      // 数据设置为undefined不会发送给服务器，相当于该项为空
      this.searchParams.category1Id = undefined
      this.searchParams.category2Id = undefined
      this.searchParams.category3Id = undefined
      this.searchParams.categoryName = undefined
      // 上个代码只是把data中指定参数置空，所以需要重新向服务器获取数据刷新页面
      // this.getData()
      // 地址栏修改，进行路由跳转(空参跳转)
      this.$router.push({
        name: 'search'
      })
    },
    // 删除面包屑关键字的标签
    removeKeyword () {
      this.searchParams.keyword = undefined
      // 通知Header删除搜索框里的关键字
      this.$bus.$emit('clear')
      // 进行路由跳转
      if (this.$route.query) {
        this.$router.push({ name: 'search', query: this.$route.query })
      }
    },
    // 删除面包屑品牌标签
    removeBrand () {
      // 删除品牌标签后，重新发送一次请求
      this.searchParams.trademark = undefined;
      this.getData()
    },
    // 删除面包屑售卖属性标签
    removeProp (index) {
      this.searchParams.props.splice(index, 1)
      this.getData()
    },
    // 变更综合/价格按钮的升/降序
    // flag判断被点击的是哪一个按钮：1是综合，2是价格
    changeOrder (flag) {
      // 拿到data数据中的flag
      let originFlag = this.searchParams.order.split(':')[0];
      // 拿到data数据中的排序方式
      let originSort = this.searchParams.order.split(':')[1];
      // 存放上一次的flag和排序方式
      let newOrder = ''
      // 点击的是激活的按钮
      if (flag == originFlag) {
        newOrder = `${originFlag}:${originSort === "desc" ? "asc" : "desc"}`;
      }
      // 点击的是未激活的按钮
      else {
        newOrder = `${flag}:desc`
      }
      // 把新变更的order覆盖原order数据
      this.searchParams.order = newOrder
      // 重新获取数据
      this.getData()
    }
  },
  beforeMount () {
    // console.log(this.$route);
    // 挂载之前先把url携带的params和query参数赋值给searchParams
    Object.assign(this.searchParams, this.$route.params, this.$route.query)
  },
  mounted () {
    // 挂载完毕后先获取一次数据
    this.getData();
    // 绑定全局事件总线
    // 传递子组件的品牌参数
    this.$bus.$on('trademarkInfo', (trademark) => {
      this.searchParams.trademark = `${trademark.tmId}:${trademark.tmName}`;
      this.getData()
    });
    // 传递子组件的属性信息（比如cpu型号/运行内存等信息）
    this.$bus.$on('propsInfo', (...propsValue) => {
      const props = propsValue.join(':');
      // console.log(props);
      // 数据去重，避免添加重复元素
      if (this.searchParams.props.indexOf(props) == -1) {
        this.searchParams.props.push(props);
      }
      this.getData()
    });
    // 接收分页器组件传递页数信息(pageNo)
    this.$bus.$on('getPageNo', pageNo => {
      this.searchParams.pageNo = pageNo;
      this.getData();
      window.scrollTo(0, 700);
    })
  },
  beforeDestroy () {
    // 组件销毁前删除全局总线上绑定的事件
    this.$bus.$off('trademarkInfo')
    this.$bus.$off('propsInfo')
  },
  // 侦听组件实例身上属性的属性值变化，并执行对应的回调函数
  watch: {
    // 侦听路由信息的变化，如果发生变化则发送新请求
    $route (newVal, oldVal) {
      // 每次发送请求都要初始化searchParams中的三级列表id数据
      this.searchParams.category1Id = ''
      this.searchParams.category2Id = ''
      this.searchParams.category3Id = ''

      // 发送ajax请求前先重新更新searchParams数据
      Object.assign(this.searchParams, this.$route.query, this.$route.params)
      // console.log(this.searchParams);
      // 发送ajax请求
      this.getData()
    }
  }
}
</script>

<style lang="less" scoped>
.main {
  margin: 10px 0;

  .py-container {
    width: 1200px;
    margin: 0 auto;

    .bread {
      margin-bottom: 5px;
      overflow: hidden;

      .sui-breadcrumb {
        padding: 3px 15px;
        margin: 0;
        font-weight: 400;
        border-radius: 3px;
        float: left;

        li {
          display: inline-block;
          line-height: 18px;

          a {
            color: #666;
            text-decoration: none;

            &:hover {
              color: #4cb9fc;
            }
          }
        }
      }

      .sui-tag {
        margin-top: -5px;
        list-style: none;
        font-size: 0;
        line-height: 0;
        padding: 5px 0 0;
        margin-bottom: 18px;
        float: left;

        .with-x {
          font-size: 12px;
          margin: 0 5px 5px 0;
          display: inline-block;
          overflow: hidden;
          color: #000;
          background: #f7f7f7;
          padding: 0 7px;
          height: 20px;
          line-height: 20px;
          border: 1px solid #dedede;
          white-space: nowrap;
          transition: color 400ms;
          cursor: pointer;

          i {
            margin-left: 10px;
            cursor: pointer;
            font: 400 14px tahoma;
            display: inline-block;
            height: 100%;
            vertical-align: middle;
          }

          &:hover {
            color: #28a3ef;
          }
        }
      }
    }

    .details {
      margin-bottom: 5px;

      .sui-navbar {
        overflow: visible;
        margin-bottom: 0;

        .filter {
          min-height: 40px;
          padding-right: 20px;
          background: #fbfbfb;
          border: 1px solid #e2e2e2;
          padding-left: 0;
          border-radius: 0;
          box-shadow: 0 1px 4px rgba(0, 0, 0, 0.065);

          .sui-nav {
            position: relative;
            left: 0;
            display: block;
            float: left;
            margin: 0 10px 0 0;

            li {
              float: left;
              line-height: 18px;

              a {
                display: block;
                cursor: pointer;
                padding: 11px 15px;
                color: #777;
                text-decoration: none;
              }

              &.active {
                a {
                  background: #e1251b;
                  color: #fff;
                }
              }
            }
          }
        }
      }

      .goods-list {
        margin: 20px 0;

        ul {
          display: flex;
          flex-wrap: wrap;

          li {
            height: 100%;
            width: 20%;
            margin-top: 10px;
            line-height: 28px;

            .list-wrap {
              .p-img {
                padding-left: 15px;
                width: 215px;
                height: 255px;

                a {
                  color: #666;

                  img {
                    max-width: 100%;
                    height: auto;
                    vertical-align: middle;
                  }
                }
              }

              .price {
                padding-left: 15px;
                font-size: 18px;
                color: #c81623;

                strong {
                  font-weight: 700;

                  i {
                    margin-left: -5px;
                  }
                }
              }

              .attr {
                padding-left: 15px;
                width: 85%;
                overflow: hidden;
                margin-bottom: 8px;
                min-height: 38px;
                cursor: pointer;
                line-height: 1.8;
                display: -webkit-box;
                -webkit-box-orient: vertical;
                -webkit-line-clamp: 2;

                a {
                  color: #333;
                  text-decoration: none;
                }
              }

              .commit {
                padding-left: 15px;
                height: 22px;
                font-size: 13px;
                color: #a7a7a7;

                span {
                  font-weight: 700;
                  color: #646fb0;
                }
              }

              .operate {
                padding: 12px 15px;

                .sui-btn {
                  display: inline-block;
                  padding: 2px 14px;
                  box-sizing: border-box;
                  margin-bottom: 0;
                  font-size: 12px;
                  line-height: 18px;
                  text-align: center;
                  vertical-align: middle;
                  cursor: pointer;
                  border-radius: 0;
                  background-color: transparent;
                  margin-right: 15px;
                }

                .btn-bordered {
                  min-width: 85px;
                  background-color: transparent;
                  border: 1px solid #8c8c8c;
                  color: #8c8c8c;

                  &:hover {
                    border: 1px solid #666;
                    color: #fff !important;
                    background-color: #666;
                    text-decoration: none;
                  }
                }

                .btn-danger {
                  border: 1px solid #e1251b;
                  color: #e1251b;

                  &:hover {
                    border: 1px solid #e1251b;
                    background-color: #e1251b;
                    color: white !important;
                    text-decoration: none;
                  }
                }
              }
            }
          }
        }
      }

      .page {
        width: 733px;
        height: 66px;
        overflow: hidden;
        float: right;

        .sui-pagination {
          margin: 18px 0;

          ul {
            margin-left: 0;
            margin-bottom: 0;
            vertical-align: middle;
            width: 490px;
            float: left;

            li {
              line-height: 18px;
              display: inline-block;

              a {
                position: relative;
                float: left;
                line-height: 18px;
                text-decoration: none;
                background-color: #fff;
                border: 1px solid #e0e9ee;
                margin-left: -1px;
                font-size: 14px;
                padding: 9px 18px;
                color: #333;
              }

              &.active {
                a {
                  background-color: #fff;
                  color: #e1251b;
                  border-color: #fff;
                  cursor: default;
                }
              }

              &.prev {
                a {
                  background-color: #fafafa;
                }
              }

              &.disabled {
                a {
                  color: #999;
                  cursor: default;
                }
              }

              &.dotted {
                span {
                  margin-left: -1px;
                  position: relative;
                  float: left;
                  line-height: 18px;
                  text-decoration: none;
                  background-color: #fff;
                  font-size: 14px;
                  border: 0;
                  padding: 9px 18px;
                  color: #333;
                }
              }

              &.next {
                a {
                  background-color: #fafafa;
                }
              }
            }
          }

          div {
            color: #333;
            font-size: 14px;
            float: right;
            width: 241px;
          }
        }
      }
    }
  }
}
</style>
